Welded crank

Greg Reimer 7376 · 12-26-2011, 08:50 PM

Anybody have a problem with welding and repairing a rod journal on a steel crank? Engine is a 327 with a problem on the #4 rod journal. It broke the big end of a rod last season, didn't seem to spin the bearing, but left a gouge on the journal.Crank is a steel large journal .010/.010, and the rest of the crank looks like a good polish job would about do it. I personally have no problem doing that, what do you serious motor people think?

BlueOval Ralph · 12-26-2011, 10:10 PM

Ran a lot of Boss 302 welded strokers ran them to 10,000 rims at Cheby journal size, had cranks done any where from 3.20,3.25,3.30 and 3.40 stroke 2.00 dia. Lunati and Hank the Crank. Lunati were hard chromed.

Quote:

Originally Posted by Greg Reimer 7376

Anybody have a problem with welding and repairing a rod journal on a steel crank? Engine is a 327 with a problem on the #4 rod journal. It broke the big end of a rod last season, didn't seem to spin the bearing, but left a gouge on the journal.Crank is a steel large journal .010/.010, and the rest of the crank looks like a good polish job would about do it. I personally have no problem doing that, what do you serious motor people think?

BillK · 12-26-2011, 10:14 PM

Quote:

Originally Posted by Greg Reimer 7376

left a gouge on the journal.

Greg,

How bad is the gouge ? I would rather see it reground down to 20 or 30 or even 40 if it cleans up at that. Welding is "ok" IF it is done properly but the heat will make the crank move all over the place and need straightening before regrinding.

Adger Smith · 12-27-2011, 12:40 AM

Send it to Bullet Cams.
I had one that was gouged and they fixed it back by doing a spot weld and regrind. They didn't weld the complete journal, just the gouged spot.
This was a nice 4.750 stroke crank and the 620 cu in engine is still making waves in the boat after 2 years.

Mike Taylor 3601 · 12-29-2011, 02:16 PM

Like Adger said they can be welded in one spot without welding whole journal,most likely whole crank will have to be ground after welding.
Mike Taylor 3601

GTX JOHN · 12-29-2011, 09:35 PM

Hi Greg: We used to do a bunch of welded strokers 20 years ago . This
was before all the Chinese Stuff. I always had them straightened and hardened at a speciality crank shop I still use him on my Stock Eliminator stuff. He is in Buena Park
off 91 which is not too far from you. Let me know and I will PM you the address
next time I am down.

Be Well!

Greg Reimer 7376 · 12-30-2011, 11:15 AM

John thanks for the reply.I can always take it down and get his opinion. I would appreciate the contact. Hope all is well with all of you. No more kidney stones on this end. I feel better than I have for a couple of years since they shattered the boulder I was carrying around for apparently some time.Take care, see you at Pomona.

Rick Kagawa · 01-02-2012, 12:35 AM

Greg, check this place out. they seem to know what they are doing:
http://www.marinecrankshaftinc.com/

12-26-2011, 08:50 PM	#1
Greg Reimer 7376 VIP Member Join Date: Nov 2008 Location: Glendora,Calif. Posts: 1,135 Likes: 172 Liked 704 Times in 218 Posts	Welded crank Anybody have a problem with welding and repairing a rod journal on a steel crank? Engine is a 327 with a problem on the #4 rod journal. It broke the big end of a rod last season, didn't seem to spin the bearing, but left a gouge on the journal.Crank is a steel large journal .010/.010, and the rest of the crank looks like a good polish job would about do it. I personally have no problem doing that, what do you serious motor people think?

12-29-2011, 02:16 PM	#5
Mike Taylor 3601 VIP Member Join Date: Oct 2008 Location: Somerset,Ky Posts: 1,371 Likes: 352 Liked 304 Times in 102 Posts	Re: Welded crank Like Adger said they can be welded in one spot without welding whole journal,most likely whole crank will have to be ground after welding. Mike Taylor 3601

12-29-2011, 09:35 PM	#6
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,732 Likes: 2,798 Liked 2,479 Times in 697 Posts	Re: Welded crank Hi Greg: We used to do a bunch of welded strokers 20 years ago . This was before all the Chinese Stuff. I always had them straightened and hardened at a speciality crank shop I still use him on my Stock Eliminator stuff. He is in Buena Park off 91 which is not too far from you. Let me know and I will PM you the address next time I am down. Be Well!

12-30-2011, 11:15 AM	#7
Greg Reimer 7376 VIP Member Join Date: Nov 2008 Location: Glendora,Calif. Posts: 1,135 Likes: 172 Liked 704 Times in 218 Posts	Re: Welded crank John thanks for the reply.I can always take it down and get his opinion. I would appreciate the contact. Hope all is well with all of you. No more kidney stones on this end. I feel better than I have for a couple of years since they shattered the boulder I was carrying around for apparently some time.Take care, see you at Pomona.

01-02-2012, 12:35 AM	#8
Rick Kagawa Junior Member Join Date: Apr 2008 Posts: 32 Likes: 1 Liked 3 Times in 1 Post	Re: Welded crank Greg, check this place out. they seem to know what they are doing: http://www.marinecrankshaftinc.com/

12-27-2011, 12:40 AM	#4
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Welded crank Send it to Bullet Cams. I had one that was gouged and they fixed it back by doing a spot weld and regrind. They didn't weld the complete journal, just the gouged spot. This was a nice 4.750 stroke crank and the 620 cu in engine is still making waves in the boat after 2 years. __________________ Adger Smith (Former SS)